Valve springs, to dual or not to dual

[OBEEWON]

Originally Posted by PoorMans180SX

Yes that's true, there are two reasons:

2. Someone has already done it, so it "works".

[TheRealSy90]

Anybody had success running stock springs with bc retainers? I've got a built head with BC springs and retainers, but I'm thinking about changing the springs out for stock ones that aren't so stiff. Planning on revving to at least 8k.

[ProjectSQ]

I would stick to the bc's..why would you want softer? If you're concerned about your HLA's then go solid...but then again I made this thread because I don't have much experience with head mods on the sr so hopefully someone else can chime in


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[TheRealSy90]

Just because of the added stress on the valvetrain components with the stiffer springs, as Kingtal0n was talking about:

Originally Posted by Kingtal0n

I always use the minimum spring for the application. For example, if I had just rebuilt an sr20det to OEM specification, I would use the OEM spring, with an OEM compatible camshaft like the S3 or S4. By keeping the OEM spring and redline, I enhance the durability of the engine by minimizing those forces that would seek to destroy it.

But I think for what my rpm goals are, the stock retainers aren't the problem, and the springs are. So I guess I'm staying with all the BC stuff, except the BC cams, sold those for JWT's of course. Although I have heard of people doing 8k on stock springs with no issues?

[ProjectSQ]

I've also heard a lot of things, most of which I wouldn't put my faith in. It might not exactly be "cutting corners" but still


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